CN220894337U - Charge output industrial acceleration sensor - Google Patents
Charge output industrial acceleration sensor Download PDFInfo
- Publication number
- CN220894337U CN220894337U CN202322664135.5U CN202322664135U CN220894337U CN 220894337 U CN220894337 U CN 220894337U CN 202322664135 U CN202322664135 U CN 202322664135U CN 220894337 U CN220894337 U CN 220894337U
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- acceleration sensor
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- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The utility model discloses a charge output industrial acceleration sensor, which comprises a sensor main body, wherein the sensor main body comprises a base, a core component connecting piece, a core component and a connector; the core component is arranged on the base through a core component connecting piece, and an insulating component is arranged between the core component connecting piece and the base; the peripheral cover of core subassembly is equipped with the shield shell, and the connector is connected to the one end of shield shell, and the core subassembly connecting piece is connected to the other end of shield shell. According to the utility model, the insulating component is arranged to isolate the core component from the base, so that the core component is in an insulating state to the ground, can be used in a complex industrial environment, can be installed in a place within 200 ℃ of high temperature, and does not choose whether a potential difference exists on the installation surface to influence the acquisition system; the shielding shell is arranged outside the core component, the core component is fully shielded, the electric signals output in the core component can be transmitted to the acquisition system or the signal amplifier, the interference of an external electric field can be effectively resisted, and the transmission quality is high.
Description
Technical Field
The utility model relates to the technical field of sensors, in particular to a charge output industrial acceleration sensor.
Background
Acceleration sensor is widely used in industry fields such as electric power, rail transit, engineering machinery, aviation, aerospace, etc., and the acceleration sensor is used for measuring vibration acceleration signals so as to achieve the purpose of monitoring the health state of important equipment. The sensing element of the acceleration sensor is a piezoelectric crystal, if an external force is applied along the polarization direction of the piezoelectric crystal to deform the piezoelectric crystal, the piezoelectric crystal is internally polarized, charges with opposite polarities appear on the two end faces of the stress, and if the external force is removed, the piezoelectric crystal is restored to an initial state, and the effect is a positive piezoelectric effect. The acceleration sensor converts mechanical energy into electric energy by utilizing the positive piezoelectric effect of the piezoelectric crystal, so that the vibration acceleration signal is measured.
The internal structure of the acceleration sensor mainly comprises a piezoelectric crystal, a mass block, a spring, a circuit board and the like.
Current industrial sensors typically have an enlarged circuit board, but industrial sensors with an enlarged circuit board cannot be used in environments with high temperatures of 200 ℃. If the sensor without the amplifying circuit is not insulated from the ground, the sensor cannot be applied to a complex industrial environment (the industrial environment generally has a certain potential difference, and the sensor which is not insulated from the ground cannot be connected to a signal acquisition system).
The problems are worth solving.
Disclosure of utility model
In order to solve the problems that the existing industrial sensors are usually provided with an amplifying circuit board, but the industrial sensors with the amplifying circuit board cannot be used in an environment with high temperature of 200 ℃ and the sensors without the amplifying circuit are not insulated from the ground and cannot be applied to complex industrial environments, the utility model provides a charge output industrial acceleration sensor.
The technical scheme of the utility model is as follows:
The charge output industrial acceleration sensor comprises a sensor main body, wherein the sensor main body comprises a base, a core component connecting piece, a core component and a connector, and the base and the connector are respectively arranged at two sides of the core component;
The core component is arranged on the base through the core component connecting piece, and an insulating component is arranged between the core component connecting piece and the base;
The periphery of the core component is covered with a shielding shell, one end of the shielding shell is connected with the connector, and the other end of the shielding shell is connected with the core component connecting piece.
According to the utility model of the scheme, the core component connecting piece comprises the compression nut and the supporting block, wherein the compression nut is of an internal hollow structure, and the cross section of the hollow structure is in a convex shape;
The cross section of the supporting block is in a convex shape, and the diameter of the larger side of the supporting block is positioned between two diameters of the hollow structure in the compression nut.
According to the utility model of the scheme, the core component comprises a crystal and a mass block, and the mass block is sleeved on the periphery of the crystal.
According to the utility model of the scheme, the crystal and the mass block are both annular, and the crystal is sleeved on the supporting block.
According to the utility model of the scheme, the base is provided with external threads;
The side that gland nut internal diameter is great is provided with the internal thread, the internal thread with the external screw thread cooperation locking the base with core subassembly connecting piece.
Further, the connector comprises a connector shell and two pins fixed in the connector shell through a sealing piece, wherein one pin is connected with the connector through a connecting wire, and the other pin is connected with the core component through a connecting wire.
According to the utility model of the scheme, the inner wall of the connector is provided with a first insulating ring.
According to the utility model of the scheme, the lower end of the connector is provided with the second insulating ring.
Further, the thickness of the shielding shell is 0.1-5mm.
Further, an insulating ring is arranged between the compression nut and the supporting block.
According to the scheme, the utility model has the beneficial effects that the insulating component is arranged to isolate the core component from the base, the core component is in an insulating state to the ground, the insulating component can be used in a complex industrial environment and can be installed in a place with the high temperature within 200 ℃, and the acquisition system is influenced without choosing whether the installation surface has potential difference or not; the shielding shell is arranged on the outer cover of the core component, the two ends of the shielding shell are connected with the core component connecting piece and the connector, the core component is fully shielded, electric signals output in the core component can be transmitted to the acquisition system or the signal amplifier, the interference of an external electric field can be effectively resisted, and the transmission quality is high.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a cross-sectional view of the present utility model;
Fig. 3 is a schematic structural view of the connector of the present utility model.
In the drawings, the respective reference numerals are as follows:
1. A sensor body;
10. A base;
20. a core assembly connector; 201. a compression nut; 202. a support block; 203. an insulating ring;
30. A core component; 301. a crystal; 302. a mass block;
40. A connector; 401. a connector housing; 402. a contact pin; 403. a first insulating ring; 404. a second insulating ring; 405. a seal;
50. a shield case;
60. Insulating locating piece.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments.
It should be noted that the terms "comprising" and "having" and any variations thereof in the description and claims of the present utility model are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus. The term "disposed" and like terms are to be broadly interpreted, and may be fixedly connected, detachably connected, or integrally formed, for example; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The directions or positions indicated by the terms "upper", "lower", "left", "right", "front", "rear", "bottom", etc. are directions or positions based on those shown in the drawings, and are merely for convenience of description, and are not to be construed as limiting the present technical solution.
As shown in fig. 1-3, an industrial acceleration sensor for outputting electric charges comprises a sensor main body 1, wherein the sensor main body 1 comprises a base 10, a core component connecting piece 20, a core component 30 and a connector 40, the base 10 and the connector 40 are respectively arranged on two sides of the core component 30, and are used in a complex industrial environment by adopting a ground insulation and complete shielding technology, and can be installed in a place within 200 ℃ of high temperature without picking up whether the installation surface has potential difference to influence an acquisition system.
Specifically, the core pack 30 is mounted on the base 10 through the core pack connector 20, and an insulating pack is provided between the core pack connector 20 and the base 10; the insulating component makes the core component connector 20 and the base 10 in an insulating state, and then the core component 30 and the base 10 in an insulating state, so as to realize the insulation of the core component 30 to the ground. In addition, providing an insulating assembly between the core assembly connector 20 and the base 10 may provide a number of benefits including noise and vibration reduction, protection of equipment, enhanced stability, improved safety, etc.
The outer cover of the core assembly 30 is provided with a shielding shell 50, one end of the shielding shell 50 is connected with the connector 40, and the other end of the shielding shell 50 is connected with the core assembly connector 20. The shielding shell 50 can resist electromagnetic interference and signal interference, and can effectively resist external electromagnetic interference and reduce interference in the signal transmission process in the working process of the core assembly 30, so that the transmission quality is improved. According to the utility model, the insulation component is arranged, so that the core component 30 is isolated from the base 10, the core component 30 is in an insulating state to the ground, can be used in a complex industrial environment, can be installed in a place with the high temperature within 200 ℃, and does not choose whether a potential difference exists on the installation surface to influence the acquisition system; the shielding shell 50 is arranged outside the core component 30, the two ends of the shielding shell 50 are connected with the core component connecting piece 20 and the connector 40, the core component 30 is completely shielded, the electric signals output by the core component 30 can be transmitted to the acquisition system or the signal amplifier, the interference of an external electric field can be effectively resisted, and the transmission quality is high.
The whole sensor main body 1 is made of materials with the temperature resistance of more than 200 ℃.
In this embodiment, the core assembly connector 20 includes a compression nut 201 and a supporting block 202, where the compression nut 201 is of an internal hollow structure, and the cross section of the hollow structure is in a shape of a "convex" for connecting the core assembly 30 and the shielding shell 50 with the connector 40 through the compression nut 201; the cross section of the supporting block 202 is in a shape of a 'convex', and the diameter of the larger side of the supporting block 202 is positioned between two diameters of the internal hollow structure of the compression nut 201. The smaller diameter side of the support block 202 is used to mount the crystal 301 and mass 302 of the core assembly 30, and the larger diameter side of the support block 202 is mounted between the compression nut 201 and the base 10 to mount the core assembly 30 to the base 10.
The core assembly 30 comprises a crystal 301 and a mass block 302, wherein the mass block 302 is sleeved on the periphery of the crystal 301. The crystal 301 is the core component of the sensor, which is capable of converting the acceleration of the object into an electrical signal output. The mass block 302 is used for sensing the acceleration of the object, and the mass block 302 is sleeved on the crystal 301. The inner diameter of the mass block 302 is slightly larger than the outer diameter of the crystal 301, and the crystal 301 and the mass block 302 are welded through high-temperature tin for supporting the mass block 302, so that the mass block 302 is ensured to move stably under the action of acceleration. Specifically, the crystal 301 is made of a piezoelectric ceramic material, and has a piezoelectric effect, i.e., generates electric charges when subjected to an external force. When an object is subjected to acceleration, the mass 302 moves relative to the crystal 301, thereby generating an electric charge in the crystal 301. The charge signal is transmitted to an acquisition system or a signal amplifier, amplified and processed, and output as an acceleration value.
In an alternative embodiment, both the crystal 301 and the mass 302 are annular.
An insulating ring 203 is arranged between the compression nut 201 and the supporting block 202, and the edges of the compression nut 201 and the supporting block 202 are electrically isolated by the insulating ring 203, so that the supporting block 202 is tightly connected and is in an insulating state. The insulating component is an insulating spacer 60. The specific materials of the insulating ring 203 and the insulating positioning sheet 60 can be selected from one or a combination of a plurality of ceramics, glass and plastics.
The base 10 is provided with external threads, and one side with a larger inner diameter of the compression nut 201 is provided with internal threads, and the internal threads and the external threads are matched to lock the base 10 and the core component connecting piece 20.
The connection between the shielding shell 50 and the core assembly connector 20 and the connector 40 may be adhesive, riveted, sintered or screw-socket.
The thickness of the shielding shell 50 is 0.1-5mm, and the thicker the shielding shell 50 is, the better the protection effect is on the premise of meeting the design requirement. However, too thick a shield case 50 also increases the weight and cost of the entire apparatus, so that it is necessary to select an appropriate thickness in consideration of various factors.
In the second embodiment, the connector 40 includes a connector housing 401 and two pins 402 fixed inside the connector housing 401 through a glass or ceramic sealing member, one pin 402 is connected with the connector 40 through a connecting wire, one pin 402 is connected with the core component 30 through a connecting wire, a first insulating ring 403 is disposed on an inner wall of the connector 40, a second insulating ring 404 is disposed at a lower end of the connector 40, and the first insulating ring 403 and the second insulating ring 404 are used for increasing a creepage distance between the pin 402 and the connector 40. The heights of the first insulating ring 403 and the second insulating ring 404 are adjusted according to the lightning protection level, and the insulating rings with different heights are all within the protection scope of the utility model.
It will be understood that modifications and variations will be apparent to those skilled in the art from the foregoing description, and it is intended that all such modifications and variations be included within the scope of the following claims.
While the utility model has been described above with reference to the accompanying drawings, it will be apparent that the implementation of the utility model is not limited by the above manner, and it is within the scope of the utility model to apply the inventive concept and technical solution to other situations as long as various improvements made by the inventive concept and technical solution are adopted, or without any improvement.
Claims (10)
1. The electric charge output industrial acceleration sensor comprises a sensor main body and is characterized in that the sensor main body comprises a base, a core component connecting piece, a core component and a connector, wherein the base and the connector are respectively arranged on two sides of the core component;
The core component is arranged on the base through the core component connecting piece, and an insulating component is arranged between the core component connecting piece and the base;
The periphery of the core component is covered with a shielding shell, one end of the shielding shell is connected with the connector, and the other end of the shielding shell is connected with the core component connecting piece.
2. The industrial acceleration sensor of claim 1, wherein the core assembly connector comprises a compression nut and a support block, the compression nut is of an internal hollow structure, and the cross section of the hollow structure is in a shape of a "convex";
The cross section of the supporting block is in a convex shape, and the diameter of the larger side of the supporting block is positioned between two diameters of the hollow structure in the compression nut.
3. A charge output industrial acceleration sensor according to claim 2, characterized in, that the core assembly comprises a crystal and a mass, which mass is sleeved around the crystal.
4. A charge outputting industrial acceleration sensor according to claim 3, characterized in, that the crystal and the mass are both ring-shaped, and the crystal is sleeved on the supporting block.
5. A charge output industrial acceleration sensor according to claim 4, characterized in, that the base is provided with an external thread;
The side that gland nut internal diameter is great is provided with the internal thread, the internal thread with the external screw thread cooperation locking the base with core subassembly connecting piece.
6. The charge output industrial acceleration sensor according to claim 1, characterized in, that the joint comprises a joint housing and a pin fixed inside the joint housing via a seal,
The number of the contact pins is two, one contact pin is connected with the connector through a connecting wire, and the other contact pin is connected with the core component through a connecting wire.
7. The industrial acceleration sensor of claim 6, wherein the inner wall of the joint is provided with a first insulating ring.
8. A charge outputting industrial acceleration sensor according to claim 6 or 7, characterized in, that the lower end of the connecting head is provided with a second insulating ring.
9. A charge outputting industrial acceleration sensor according to claim 1, characterized in, that the thickness of the shielding shell is 0.1-5mm.
10. A charge outputting industrial acceleration sensor according to claim 2, characterized in, that an insulating ring is arranged between the compression nut and the supporting block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322664135.5U CN220894337U (en) | 2023-09-27 | 2023-09-27 | Charge output industrial acceleration sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322664135.5U CN220894337U (en) | 2023-09-27 | 2023-09-27 | Charge output industrial acceleration sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220894337U true CN220894337U (en) | 2024-05-03 |
Family
ID=90839315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322664135.5U Active CN220894337U (en) | 2023-09-27 | 2023-09-27 | Charge output industrial acceleration sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220894337U (en) |
-
2023
- 2023-09-27 CN CN202322664135.5U patent/CN220894337U/en active Active
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